|
April 30, 2009: William “Bill” Poe, a Consultant with Invensys Process Systems in Houston, Texas, discussed the benefits of utilizing Dynamic Combustion Optimization to minimize heat rate, reduce tube failures, and maximize ramp rates while honoring emissions and other operating constraints. Dynamic Combustion Optimization incorporates robust, online predictive modeling with adaptive control complemented with optimization algorithms that respond very quickly to changing conditions.
Post Combustion Optimization pays Dividends:
SCR optimization achieves:
- Up to two percent removal efficiency improvement - $50,000 per year in ammonia savings and $20,000 per year for 250 MW plant in NOx credits
- Improvement in catalyst life
- Reduced flyash contamination by ammonia
- Reduction in air preheater cleaning frequency.
FGD optimization for a 500 MW unit achieved:
- Five percent limestone reduction - $80,000 per year or
- One percent removal efficiency improvement - $60,000 per year. |
